Life, as it has been said, can suck.
My relationship of five years (3 yrs married) ended in July, and I am just beginning to feel reasonably normal again. Long story short, the reasons for it ending were manifold, but in the end, it came down to her wanting to take a very different life path, and the marriage was "in her way".
The best remedies for heartbreak are:
1. Time.
2. Time and effort spent reclaiming what impassions you, or serves you in a tangible way.
3. Effort directed at redefining what you want out of life.
That being said, a good solid "revenge fuck" can be quite helpful as well.
>>sometimes it doesn't matter how hard you're trying if the other person isn't.
Too true. To be able to understand that sometimes one is buffeted by forces beyond one's control is an important thing to understand and accept.